Vacuum cleaning-machine.



S. L. CASELLA.

VACUUM CLEANING MACHINE.

APPLICATION FILED 00114, 1910.

Patented Dec. 8, 1914.

' In've 12 801":

AQCW v/ Witnesses.

MVmf. aflm hm SIIJCONTDO II. CASELLA, OF NEW YORK, N. Y.

VACUUM CLEANING-MACHINE.

Specification of Letters Patent.

Patented Dec. 8, 1914.

A plication as October 14, 1910. Serial No. 587,052.

To all whom it may concern Be it known that I, Snoonno L. CAsnLLA, a citizen of the United States, residing at the boroughof Manhattan, city of New York, in the county of' New York and Stateof New York, have invented certain new and useful Improvements in Vacuum Cleaning-Machines, of which the following my invention will appear from the ollowproduce a convenient,reliable, efficient and inexpen sive pneumatic cleaner in which all of the parts will be combined in one composite or unitary structure which Will be fportableor adapted to be carried around bodily in operation, thus avoidin the troublesome manipulation of a long exible PAnot-her object of my invention is to provide a novel; construct-ion and disposition of the dust arrester which will materially. augment the eificiency of the cleaner. Stillpther objects and advanta es of ing description. p 11 its broad aspect my invention comprehends a cleaner comprising a motor, an exhaust device, a .dust bag and a suction pipe,

, all contained in one casing and making one composite portable structure, the dust bag beingarranged between the nozzle and the exhaust device.

, My invention further comprehends a dust bag having the surface area increased without increasing the length or diameter, by folding or plaiting the material, and also a suitable frame for supporting the bag in open or distended position.

- My invention still further, comprehends various, features of construction and arrangement of parts which will appear from .the following description of a the vacuum cleaner embodying my invention shown inthe accompanying drawings.

I shall now describe the construction shown in the accompanying drawings and shall thereafter point out my invention in claims.

Figure 1 is a plan view on a reduced scale of the complete cleaner. Fig. 2 is a longitudinal central vertical section of the same, drawn to a larger scale and. partly broken away. Fig. 3 is a detail central vertical section of the nozzle and the end of the suction pipe. Fig. 4 is a transverse vertical section taken on the line 4 4: of Fig. 2, looking toward the left. Fig. 5 is a detail plan view of the connecting ring and end of thecasing broken 0E, Fig. 6 is a transverse vertical section on the line 6-6 of Fig. 2, looking toward the left. Fig. 7 is an enlarged horizontal sectional detail of the parts at the connection between the casing and end'cap. Fig. 8 is a detail rear end view of the dust bag.

In the illustrated embodiment of my invention, the casing is composed of three main parts, the cylindrical body portion 11 of aluminum or other suitable light material inclosing the suction or filter chamber, a cap 12 provided with an air inlet and at,- tached to one end of the body portion, and the motor casing 13, in which is secured an electric motor 14, attached to the other end of the body portion. Between the motor casing 13 and the body portion 11 is an enlarged annular fan chamber 15, formed by the joining of abuttin flanged ends of the two casing parts, the iiange 16 on the body portion being a separate piece and attached to the casing by rivets, as shown. while the flange on the motor casing is formed integral therewith, though this connection may be modified as desired. The rear end of the motor,casing is open and is closed by a flanged 'plate 17 attached by screws, a rearward axially extending handle 18 being formed integral with the plate 17 to facilitate handling the cleaner. To further facilitate handling, another handle 19 is at tached to the top of the body portion 11 of the casing.

The motor shaft 20, which extends axially of the casing, is journaled in a bearing in the wall between the motor chamber and the fan chamber, and extends centrally through the fan chamber 15. The exhaust out any n attaching lugs 21 on I as to be readily detachable.

end of the body11','an attaching ring '27 is and this ring. 11 .are provided with two di- 5 rearwardly' extending device employed is a rotary centrifugal fan carried by the motor shaft. To provide for the egress of air, air outlets are formed circumferentially around the fan chamber. The flange 16 is spaced from its comple mentary flange on the motor casing by four ing four vents between the lugs,,each substantially 90 andextending circumferenj tially orin a plane .at right angles to the axisof the casing. ranged to register composed 23,- six radial vanes 24, and a hub 25 by which the vanes are carried. The bottom The exhaust fan is arwith these vents, and is plate 23- haslan annular opening around the hub for the in ress of air, and is formed with a fol-war ly extending flange around this opening which registers with and projects into a corresponding opening in a defiector plate 26 the casing 11. it is sucked in,

' terference through the fan to By these means the air, as is directed in its course withair outlets. F I o The cap 12 is secured on to the body 11 so On the forward The air inlet is. provided in lthecap?12,-

and a rig d suction pipe 31 of substantial:

length is mserted into this opening well back into the filter chamber, as shown, so a from falling back out of the suction pipe whenthe motor is stopped.

to prevent the dirt Any suitable nozzle 37 may be jattachedon the end of the suction pipe. 7; To permit the operator to observe the working of the cleaner and see whether or not it is sucking up dust, an inspection glass 32 is inserted in the cap. 12. The pipe duct in' the cap is provided with,openings,

shown, and the inspection glass, of a hollow glass duct at this point, the metallic pipe 31 being consequently in two parts with the inspecv tion glass "connecting them. The location of in the form the glassis especially advanta eous, since it' permits a ready inspection ata l times of the full amount of dust being drawn in just be- "View.

the flange 16, thus leavof a top plate22, a bottom plate attached to the inner wall of.

the

tion,

portioniof the slots It is manifest that shown,

cylinder, s nserted in the.

endof. the handle anac nda fore it enters the filter. chamber, there being no filter or other impedimenuto obstruct the -The dust arrester or-filter is in the form of a dust bag or cloth of suitable mesh. This bag 33 is secured in the filter chamber with its mouth 'inclosing the suction pipe 31, and extends the full length of the chamber. The

- dust laden air, therefore, enters the bag and passes out through the cloth, which acts as a filter and keeps the dust in'the bag in the usual wayand hence the air is cleaned before it passes through the fan and does not clog'up the fan, is drawn through the fan. The dust bag shown is an improved bag designed-for convenience and to facilitatesuction. To rig idly hold the bag open and in distended position, a frame-is. provided to which the bag is sewed ,or otherwise secured. The frame is shown as composed'of two U-shaped wires -34 arranged at right anglesto each other,

as is the case vwhere the dust and a hat, ring 35,,to which the wires 34 are attached at their ends by being turned outwardly and riveted in holes in the-ring, as shown. .The bag is arranged inside the and sides,

' frameand is sewed to thepwires at the top Q and its lower end'is turned back 'on itself overt e ring 35 and secured. The bag and fraineare. substantially of the length of the filter-chamber and are carried by the cap 12. To attachthe bag to the cap, the open end is merely pushed in and held by fricthe'ring 35 being of the.proper diameter to fit into the cap suficiently snugly to produce the necessary friction. It is apparentthat the cap may be removed and the bag withdrawnwith thecapwith slight r agitation, since the cap does not have to be rotated to be removed; and since the bag is held distended by the' frame,-it is a simple matter to shake the dust out of the bag.

With a porous material such as is employed" in the bag of a vacuum cleaner; the suction is limited by-the pores of the bag .andtherefore an increase in the surface area of the bag increases the total area of the ores. ll increase this surface area without {increasing the size of the bag-by folding or 'plaiting the material of the bag and, as

, these folds or plaits are ongitudinally arranged. and extend substantially securedhy sewing on acap piece 36, consisting-inf adisl: of cloth at the closed end of thebag' To suitably support and ggguide the conducting for the motor 14, which may be attached to any bracket, they enter the from end to end of the bag. .These folds fare turnedover on the top of the bag and 11th" ld-which is hollow, and

pass through bushings into the motor casmg, asshown. These wires are of suficient length fto enable the cleaner tov he carried to the placate he cleaned and the surface or we articles are cleanedby moving the nozzle 37 over them, which is easily done, since the cleaner forms a rigid unit.

It is obvious that various modifications may be made in the construction shown and above particularly described within the principle and scope of my invention.

I claim 1. In a pneumatic cleaner, an elongated dust filter bag having its longitudinal walls formed in folds or plaits longitudinally arranged about an unrestricted interior so as to provide a single undivided dust chamber with walls largely increased in surface area.

In a pneumatic cleaner, in combination with means for exhausting the air, a casing open at one end, a detachable cap for the open end of the casing, a dust bag supporting frame therefor 'comprisin a ring and a plurality of wires extendinglongitudinally of the bag and secured to the ring, the bag having its-mouth attached to anda the ring and the ring being frictionally secured in the cap.

3. A pneumatic cleaner having a suction chamber with an air inlet opening, an elongated dust bag having its longitudinal walls folded or plaited longitudinally of the bag to increase the area of the suction surface thereof, and arranged with its mouth inclosing the inlet opening; and a supporting frame for the bag comprising wires arranged outside of and extending longitudinally of the bag; and an attaching ring for the bag to which the bag and the supporting wires are secured, the attaching ring being frictionally vdetachably secured about the inlet opening.

In testimony whereof I have affixed my signature in presence of two witnesses.

SECONDO L. GASELLA.

Witnesses:

Vroron D. Bons'r, J. A. WYGANT. 

